At what distance should the converging lens of focal length 10 cm be held in order to view the squares distinctly with the maximum possible magnifying power? Is the magnification equal to the magnifying power in this case? Explain.

At what distance should the converging lens of focal length 10 cm be held in order to view the squares distinctly with the maximum possible magnifying power? What is the magnification in this case?

At what distance should be placed from a convex lens of focal length 15 cm to obtain an image three times the size of the object?

Two thin converging lenses of focal lenths 15 cm and 30 cm are held in contact with each other.Calculate power and focal length of the combination.

A detective uses a converging lens of focal lenth 12 cm to examine the fine details of some cloth fibers found at the scene of a crime. What is the maximum magnification given by the lens?

A card sheet divided into squares each of size 1 mm^2 is being viewed at a distance of 9 cm through a magnifying glass (a converging lens of focal length 9 cm) held close to the eye. What is the angular magnification (magnifying power) of the lens?

A card sheet divided into squares each of size 1 mm^2 is being viewed at a distance of 9 cm through a magnifying glass (a converging lens of focal length 10 cm) held close to the eye. What should be the distance between the object in converging lens and the magnifying glass if the virtual image of each square in the figure is to have an area of 6.25 mm^2 . Would you be able to see the squares distinctly with your eyes very close to the magnifier ?

An object is placed at a distance 5 cm from a convex lens of focal lenth 10 cm.Calculate the position nd magnifiation of the image.

If a convex lens of focal length 80 cm and a concave lens of focal length 50 cm re combined together ,what will be their resulting power?

In a compound microscope,an object is placed at a distance of 1.5 cm from the objective of focal length 1.25 cm .If hthe eye-piece has a focal length of 5 cm and the final image is formed at the near point,estimate the magnifying power of the icroscope.